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authorCarmine Scarpitta <cscarpit@cisco.com>2024-05-05 07:25:57 +0200
committerMergify <37929162+mergify[bot]@users.noreply.github.com>2024-05-06 05:52:34 +0000
commit238f2b0d14a0a945e1930df0e106f9efa6d2e388 (patch)
tree74ed22f2d0d2761ce2fd02f0a051d13800834afe
parent20593bf0fb520d6a5283df3fbd9eba56e96b7edd (diff)
bgpd: Fix the order of NULL check and ZAPI decode
When BGP receives an SRV6_LOCATOR_ADD message from zebra, it calls the `bgp_zebra_process_srv6_locator_add()` function to process the message. `bgp_zebra_process_srv6_locator_add()` decodes the message first, and then if the pointer to the default BGP instance is NULL (i.e. the default BGP instance is not configured yet), it returns early without doing anything and without using the decoded message information. This commit fixes the order of the operations executed by `bgp_zebra_process_srv6_locator_add()`. We first ensure that the default BGP instance is ready and we return early if it is not. Then, we decode the message and do something with the information contained in it. Signed-off-by: Carmine Scarpitta <cscarpit@cisco.com> (cherry picked from commit bdc2c7bc5473b5582419702211c22e5d29bf0631)
-rw-r--r--bgpd/bgp_zebra.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/bgpd/bgp_zebra.c b/bgpd/bgp_zebra.c
index d22c57c1a7..fe29662e28 100644
--- a/bgpd/bgp_zebra.c
+++ b/bgpd/bgp_zebra.c
@@ -3187,12 +3187,12 @@ static int bgp_zebra_process_srv6_locator_add(ZAPI_CALLBACK_ARGS)
struct bgp *bgp = bgp_get_default();
const char *loc_name = bgp->srv6_locator_name;
- if (zapi_srv6_locator_decode(zclient->ibuf, &loc) < 0)
- return -1;
-
if (!bgp || !bgp->srv6_enabled)
return 0;
+ if (zapi_srv6_locator_decode(zclient->ibuf, &loc) < 0)
+ return -1;
+
if (bgp_zebra_srv6_manager_get_locator_chunk(loc_name) < 0)
return -1;